# abscissa

[ab-sis-uh]

- (in plane Cartesian coordinates) the x-coordinate of a point: its distance from the y-axis measured parallel to the x-axis.

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Compare ordinate.

## Origin of abscissa^{}

Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

## Examples from the Web for abscissa

### Historical Examples

#### The abscissa of such a curve is the reading of the instrument to be corrected.

#### To provide for such cases the curve is drawn as if it never touched the abscissa.

LogicCarveth Read

#### A curve is thus obtained, the ordinate representing growth elongation and the abscissa the time.

Life Movements in PlantsSir Jagadis Chunder Bose

#### As the temperature is made to rise one degree per minute, the abscissa also represents rise of temperature (Fig. 66).

Life Movements in PlantsSir Jagadis Chunder Bose

#### A Thermo-crescent Curve is thus obtained, the ordinate of which represents increment of growth, and the abscissa, the time.

Life Movements in PlantsSir Jagadis Chunder Bose

## abscissa

- the horizontal or x -coordinate of a point in a two-dimensional system of Cartesian coordinates. It is the distance from the y -axis measured parallel to the x -axisCompare ordinate

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## Word Origin

C17: New Latin, originally linea abscissa a cut-off line

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

## Word Origin and History for abscissa

Online Etymology Dictionary, © 2010 Douglas Harper

## abscissa

[ăb-sĭs′ə]

- The distance of a point from the y-axis on a graph in the Cartesian coordinate system. It is measured parallel to the x-axis. For example, a point having coordinates (2,3) has 2 as its abscissa. Compare ordinate.

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The American Heritage® Science Dictionary
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